@bjkg
Thanks for your reply and the links
which I have to add have already been visited by me.
The flash path is 215D > 215 > S15J 
MediaCodeSpeedEdit support for Pioneer DVD-Writers
The Mediacodespeededit is still a bit misty I’ll know if the S15J is supported when I get crossed to that point for sure but I would like to know before I start the process.
Key features of the Pioneer support:
1/ Support for PIONEER DVD-RW DVR-109/110x/111x/112x/115x/212x/215x/K05/K15/K17 DVD writer.
The S15J is not mentioned in the supported list
so has someone personal knowledge of the question i’m asking 
Thanks for any help on the subject.